An equivalent hot spot design method for riser was designed through application of equivalent hot spot in riser design.
将当量热节概念应用于冒口设计，提出了冒口的当量热节设计法。
The equivalent hot spot method for riser design has the advantages of direct visual and simple calculation.
冒口的当量热节设计法，概念直观，计算简单。
The changes of place and size of casting hot spot with the time are based on structure of casting, material of mould and the position of gate and riser.
热节的位置、大小受铸件结构、铸型材质和浇冒口系统的开设位置所影响。
The relationship between riser and hot spot is also discussed in this paper.
讨论了冒 口与热节的位置关系。
The temperature measuring results show that in case that the riser is located on hot spot, the solidifications time of hot spot is prolonged by 80%.
测温试验表明，冒口放在热节上，热节处的凝固时间延长80％；
The temperature measuring results show that in case that the riser is located on hot spot, the solidifications time of hot spot is prolonged by 80%.
测温试验表明，冒口放在热节上，热节处的凝固时间延长80％；
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